JPH041027Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a joint structure at a joint between two members, such as a side member and a cross member, which constitute a frame member of an automobile, etc. .

[Conventional technology]

Conventionally, as a joint structure at the joint part of two members with closed cross sections that constitute the frame members of automobiles, etc.,
For example, to explain the connection structure between a side member and a cross member of an automobile, as shown in FIG.
0 are arranged at intervals in the vehicle width direction, and a cross member 60 is horizontally suspended to connect the left and right side members 30, and the side members 30 are disposed in the longitudinal direction (vehicle longitudinal direction). The ends 610 of the cross member 60 are butted against each other at a substantially right angle to the cross member 60, and are joined and connected by spot welding or the like. To explain this joint structure in detail, as shown in FIGS. 3 to 5, the side members 30 and the cross member 60 each include plate members 20, 50 having a U-shaped cross section and plate members 10, 40 having a flat plate shape, respectively. Joint flange 210, 510, 110, 41
0 to form a closed section with a substantially square cross section, and the side member 30 is sandwiched between the U-shaped plate material 50 and the flat plate material 40 at the end 610 of the cross member 60. The cross member 60 is connected to the side member 3.
0, butted against each other at a substantially right angle to the longitudinal direction of the two. That is, as shown in FIGS. 3 and 4, the end portion 610 of the cross member 60 abuts against the longitudinal direction of the side member 30 at a substantially right angle.
The flat plate material 40 in the side member 30
While contacting and joining the flat plate material 10 of
The U-shaped base 520 of the U-shaped plate 50 at the end 610 of the cross member 60 is brought into contact with and joined to the U-shaped base 220 (upper surface) of the U-shaped plate 20 of the side member 30. . Incidentally, the U-shaped both walls 530 of the U-shaped plate material 50 at the end portion 610 of the cross member 60 are as shown in FIG. It is bent into a joining flange shape and is joined to both U-shaped walls 230 of the U-shaped plate material 20 of the side member 30.
In this way, the end 610 of the cross member 60
The side member 30 is sandwiched between (the flat plate material 40 and the U-shaped plate material 50), and the ends 610 of the cross member 60 are butted together at approximately right angles to the longitudinal direction of the side member 30, and joined by spot welding or the like. By doing so, the side member 3
0 and the cross member 60.

In addition, this side member 30 and cross member 6
Since various loads (external forces) are applied to the joint part with 0 (end 610), it is necessary to increase (ensure) the rigidity of this joint part. , both U-shaped walls 230 of the U-shaped plate material 20 of the side member 30 are connected to form a reinforcing portion 70 within the U-shaped cross section of the U-shaped plate material 20 of the side member 30 at this joining site. A reinforcing bulkhead 80 (that is, the bulkhead 80 is interposed within the substantially rectangular closed cross section of the side member 30) is interposed to support the two U-shaped walls 230, and the two U-shaped walls 230 are connected by spot welding or the like. The bulk head 80 forms a so-called reinforcing section 70, which prevents the side member 30 from collapsing (cross section deformation) and strengthens the side member 30 and the cross member 60 (end portion 610). The structure is designed to increase the rigidity of the bonding site. Note that the symbol x in FIG. 3 indicates a welded joint location by spot welding or the like.

In addition, as a conventional technology showing a joint structure configured to firmly connect the joint site between the side member and the cross member in this way, for example,
There is Publication No. 34113 (Utility Application No. 106356, Showa 49).

[Problem that the invention attempts to solve]

However, in the case of the member coupling structure shown in FIGS. 3 to 5, in order to increase (ensure) the rigidity of the coupling portion between the side member 30 and the cross member 60 (end portion 610), the structure shown in FIGS. As shown, in order to form a reinforcing portion 70 within the U-shaped cross section of the U-shaped plate material 20 of the side member 30 at this joining site, it is necessary to interpose and join a separate bulk head 80, which increases the number of parts. At the same time, in order to interpose and join the bulkhead 80, which is a separate member, before the side members 30 and the cross member 60 (end portion 610) are butted and joined together, the U-shape of the side member 30 must be The separate member bulkhead 80 is interposed in the U-shaped plate material 20 (within the U-shaped cross section), and the bulk head 80 is joined to both U-shaped walls 230 of the U-shaped plate material 20 of the side member 30 by spot welding or the like. This requires additional work, increases the work process and man-hours, increases the number of parts due to the use of the bulkhead 80 mentioned above, and increases each cost, resulting in the problem of a decline in productivity. be.

Therefore, the purpose of this invention was to eliminate the need to increase the number of parts, work processes, man-hours, and costs.
It is an object of the present invention to improve the rigidity of a joining site of a plurality of members by reinforcing it without reducing productivity.

[Means for solving problems]

Therefore, this invention solves the above-mentioned problem by forming the joining flanges of the one side member and the other side member diagonally, and the end portion of the one side member forming the other member is A diagonally extending reinforcing portion is formed to extend so as to connect the diagonal portions on which the joint flanges of one member are formed, and the diagonally extending reinforcing portion is formed in a diagonal shape so as to connect the diagonal portions of the one member. The diagonally extending reinforcing portion of the other member connects the other member with the one member by overlapping and joining each diagonal joining flange at the diagonal portion of the one member. This problem is solved by forming a reinforcing part on one of the members at the joining site.

In more detail, referring to the reference numerals shown in FIG. The end portions 61 of the other member 6 forming a substantially rectangular closed cross section are butted and joined by the other side member 5, and a reinforcing portion 7 is formed on the one member 3 at this butt joining portion. In the member combination structure, the one member 3
Each joining flange 1 of one side material 1 and other side material 2
1 and 21 are formed in a diagonal shape, and the diagonal portion 3a has diagonal joint flanges 11 and 21 of the one member 3 formed at the end 42 of the one side member 4 of the other member 6. , 3a is formed to extend diagonally. The one member 3 is inserted diagonally, and is overlapped and joined with the diagonal joining flanges 11 and 21 at the diagonal portion 3a of the one member 3, and the diagonally extending reinforcing portion 8 of the other member 6 The structure is such that a reinforcing portion 7 is formed in the member 3.

[Effect]

According to the above-mentioned means, when one member 3 and the other member 6 are connected, the diagonal line is formed to connect each diagonal portion 3a of the one member 3 formed by the one side member 1 and the other side member 2. The diagonally extending reinforcing portion 8 formed at the end 42 of the one side member 4 of the other member 6 is inserted into and interposed in one member 3, so that the other member 6 (end 42 of the one side member 4) By sandwiching the diagonally extending reinforcing portions 8 between the diagonal joining flanges 11 and 21 at each diagonal portion 3a of the one member 3 and joining them by overlapping them (three pieces), the one member Each diagonal portion 3a of the one member 3 is provided with a reinforcing portion 7 formed on the one member 3 in order to reinforce the butt joint portion of the member 3 and the other member 6 (end portion 61) and increase the rigidity. Since the diagonally extending reinforcing portion 8 of the other member 6 (the end portion 42 of the one side member 4) is interposed diagonally to connect the two members and is joined to each joining flange 11, 21, the separate member The number of parts for forming the reinforcing part 7 does not increase without using the reinforcing member etc., and the diagonally extending reinforcing part 8 of the other member 6 (end part 42 of one side member 4)
is joined to the one member 3 at each diagonal portion 3 of this one member 3 at the time of forming this one member 3.
Each diagonal joining flange 11, 21 at a
This can be done by spot welding or the like at the same time as the reinforcing part 7 is joined, and the work process and work man-hours for forming the reinforcing part 7 do not increase, so the number of parts does not increase and costs can be reduced. , the so-called productivity can be improved, and the diagonal line is formed so as to connect each diagonal portion 3a of the one member 3 at the butt joint portion of the one member 3 and the other member 6 (end portion 61). Since the diagonally extending reinforcing portion 8 of the other member 6 (the end portion 42 of the one side member 4) can be interposed and joined to form the reinforcing portion 7 on the one member 3 at the joining site, the above-mentioned The bonding site can be reinforced and the rigidity of this bonding site can be improved.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

The drawings in FIGS. 1 and 2 show an embodiment of this invention, and in a joint structure of two members with a substantially rectangular closed cross section constituting a frame member of an automobile, for example, a side member and a cross member of an automobile etc. To explain the bond structure with as an example, this first
As shown in the figure and FIG. 2, the side member 3, which is one member forming a substantially rectangular closed cross section with two plate materials, one side member 1 and the other side member 2, extends in the longitudinal direction (vehicle longitudinal direction). At a substantially right angle, similar to this side member 3, there is a cross which is the other member that forms a substantially rectangular closed cross section with two plate materials, one side material 4 (flat plate material) and the other side material 5 (U-shaped board material). End 61 of member 6
The side members 3 are butt-connected to the cross member 6 (end portion 61), which is suspended horizontally so as to connect the left and right side members 3, by butting them together and joining them by spot welding or the like. (See Figure 2 for the bonded state). Further, in order to reinforce the joint portion between the side member 3 and the cross member 6 (end portion 61) to improve (ensure) rigidity, a reinforcing portion 7 is formed on the side member 3 at this joint portion.

This is the coupling structure of the members (i.e., the side members 3 and the cross members 6) configured in this way, and the first
As shown in the drawings and FIG. 2, the joining flanges 11 and 21 of the one side member 1 and the other side member 2 are joined to form the side member 3 having a substantially rectangular closed cross section.
is formed on each diagonal portion 3a of this side member 3 so as to be joined at one diagonal portion 3a of the substantially square side member 3 formed by the one side member 1 and the other side member 2. That is, the one side member 1 and the other side member 2 forming the side member 3 are both formed into a substantially L-shape having respective joining flanges 11 and 21 formed at each diagonal portion 3a, and this approximately L-shape. By joining the L-shaped one side member 1 and the other side member 2 at respective joining flanges 11 and 21, a side member 3 forming a substantially rectangular closed cross section as shown in FIG.
can be formed. Further, the cross member 6 which is butt-joined to the side member 3 formed in this manner connects one side member 4 of the flat plate material and the other side member 5 of the U-shaped plate material having a U-shaped cross section. By joining at the flanges 41 and 51, it is formed to form a substantially rectangular closed cross section similar to the side member 3, and the one side member 4 of the flat plate material at the end 61 of the cross member 6 is formed. The respective joining flanges 11 and 21 are formed diagonally on the side member 3 at the end 42 near the side member 3 in order to join and form the side member 3 within the substantially rectangular closed cross section of the side member 3. A diagonally extending reinforcing portion 8 is integrally formed to extend diagonally so as to connect each diagonal portion 3a of the side member 3. That is,
As shown in FIG. 2, each joining flange 11, 21 of the side member 3 is formed at the end 42 of the one side member 4 of the cross member 6 within the substantially rectangular closed cross section of the side member 3. Each diagonal part 3
A diagonally extending reinforcing portion 8 which is arranged in a so-called diagonal manner so as to connect the points a is integrally formed. And the end 4 of the one side member 4 at the end 61 of the cross member 6
The diagonally extending reinforcing portion 8 formed integrally with the side member 3 is connected to each diagonal portion 3 in which the joining flanges 11 and 21 are formed within the substantially rectangular closed cross section of the side member 3.
By inserting and intervening diagonally at point a and joining to the joining flanges 11 and 21, the diagonally extending reinforcing portion 8 of the interposed and joined cross member 6 connects the side member 3 and the cross member 6.
A reinforcing portion 7 is formed on the side member 3 at the butt joint portion with the end portion 61. Note that the symbol x in FIGS. 1 and 2 indicates a welded joint location by spot welding or the like.

Therefore, in order to join the side members 3 and cross members 6, when the end portions 61 of the cross members 6 are butted and joined at a substantially right angle to the longitudinal direction of the side members 3, one side member having a substantially L-shape is used. 1 and other side material 2
and each diagonal portion 3 of the side member 3 formed with the joining flanges 11 and 21.
The ends 42 of the one side member 4, which is a flat plate of the cross member 6, are arranged diagonally (so-called obliquely) within the substantially rectangular closed cross section of the side member 3 so as to connect the ends 42 of the cross member 6.
In other words, between the one side member 1 and the other side member 2 of the side member 3, the substantially rectangular closed cross section of the side member 3 is inserted and interposed. One side member 4 of the cross member 6 is divided so as to form two substantially triangular closed cross sections.
The diagonally extending reinforcing portion 8 of the end portion 42 of the side member 3
Inserted and interposed in a so-called oblique manner at the inside (so as to connect each diagonal part 3a), and both ends of the diagonally extending reinforcing part 8 integrally formed on the end part 42 of the one side member 4 of this cross member 6. 8a to the side member 3
They are sandwiched between the diagonal joining flanges 11 and 21 at each diagonal portion 3a and overlapped to form a so-called triple stack and joined by spot welding as shown in FIG. When joining the diagonal joining flanges 11 and 21 of the substantially L-shaped one side member 1 and the other side member 2 to form the member 3, the respective joining flanges 11, The diagonally extending reinforcing portions 8 (both ends 8a) of the cross member 6 (end portion 42 of one side member 4) sandwiched between the cross members 21 are also joined (spot welded) at the same time. Also cross member 6
The U-shaped base 52 of the other side member 5 of the U-shaped plate material forming the (end portion 61) abuts the base 22 (upper surface) of the substantially L-shaped other side member 2 forming the side member 3. At the same time, the U-shaped both walls 53 of the other side member 5 of the cross member 6 are bent into a joining flange shape as shown in FIG. Butt-jointed. Note that the side member 3 of the other side member 5 of the U-shaped plate material at the end 61 of the cross member 6
Since the joining to the other side material 2 is performed by spot welding, due to workability etc., generally the flat plate material at the end 61 of the cross member 6 is bonded as shown in FIG. One side material 4
Before intervening and joining the diagonally extending reinforcing part 8 (end part 42) to the side member 3 (between the one side member 1 and the other side member 2) in a diagonal shape (to connect each diagonal part 3a). , the other side member 5 (U-shaped plate material) of the cross member 6 is joined to the other side member 2 of the side member 3. Further, in this embodiment, the cross member 6 (one side member 4
In order to improve the plate joining condition (joint condition) between the diagonally extending reinforcing portion 8 of the end portion 42) and the side member 3 (one side member 1 and the other side member 2), as shown in FIG. For example, the joining flange 11 of the one side member 1 of the side member 3 to which the diagonally extending reinforcing portion 8 (both ends 8a) of the cross member 6 (the end 42 of the one side member 4) is joined is attached to the joining flange 11 of the one side member 1 of the side member 6 (the end 42 of the one side member 4). Although a configuration is shown in which a recess 12 (so-called back cut portion) is formed to accommodate the thickness of the diagonally extending reinforcing portion 8), this recess 12 may be omitted.

Therefore, side member 3 and cross member 6
A diagonal line is formed so as to connect the diagonal portions 3a in which the joining flanges 11 and 12 are formed diagonally on this side member 3 within the substantially rectangular closed cross section of the side member 3 at the butt joint portion with the end portion 61. By interposing and joining the diagonally extending reinforcing portion 8 integrally formed with the end portion 42 of the one side member 4 of the cross member 6, the diagonally extending reinforcing portion 8 is used to strengthen the aforementioned structure as shown in FIG. A reinforcing portion 7 can be formed on the side member 3 at the butt joint portion of the side member 3 and the cross member 6 (end portion 61), and the cross member 6 (one side member 4 As shown in FIG. 2, the diagonally extending reinforcing portions 8 of the end portions 42) of the side members 3 are formed in a diagonal shape, a so-called oblique shape, so as to connect the diagonal portions 3a within the substantially rectangular closed cross section of the side member 3. Since the side members 3 and cross members 6 (end portions 61) are joined together by intervening, the butt joint portion (side members 3) of the side members 3 and cross members 6 (end portions 42 of one side member 4) are interposed and joined. ) can be firmly held and sufficiently reinforced by the diagonally extending reinforcing section 8. As a result, when various loads (external forces) are applied to the butt joint portion of the side member 3 and the cross member 6 (end portion 61), these loads (external forces) are absorbed by forming the reinforcing portion 7 in the side member 3. The diagonally extending reinforcing portion 8 of the cross member 6 (end portion 42 of one side member 4) can securely and firmly hold and reinforce the butt joint portion, especially the end portion 61 of the cross member 6. Since cross-sectional collapse (cross-sectional deformation) in the closed cross section of the butt-jointed side members 3 can be reliably prevented, the rigidity of the butt-joint portion can be greatly improved, and the side members 3 and cross members 6 are It can fully fulfill the function of configuring the frame member of the vehicle body. Note that the diagonally extending reinforcing portion 8 of the cross member 6 (end portion 42 of one side member 4)
As described above (as shown in FIG. 2), the joint flanges 11 and 21 are interposed diagonally within the substantially rectangular closed cross section of the side member 3 so as to connect the diagonal portions 3a formed thereon. joined,
That is, since the side members 3 are interposed and joined in a diagonal manner within the substantially rectangular closed cross section of the side members 3, the side members 3 and the cross members 6 (end portions 61)
Butt joining part (especially side member 3)
can be held and reinforced even more firmly, thereby making it possible to further significantly improve the rigidity of the butt joint portion. Further, in this embodiment, in order to form a reinforcing portion 7 in the side member 3, the cross member is diagonally interposed and joined to connect each diagonal portion 3a within a substantially rectangular closed cross section of the side member 3. 6 (one side material 4
As shown in FIGS. 1 and 2, the diagonally extending reinforcing portion 8 of the end portion 42) is provided with a so-called press bead 81 having a hole and a protruding portion formed on the edge of the hole, and the diagonally extending reinforcing portion 8. Upright flanges 82 facing upward or downward (upward in this embodiment) are formed at both ends of the reinforcing portion 8 in the longitudinal direction of the vehicle, and the diagonally extending reinforcing portion 8
By increasing the rigidity of the diagonally extending reinforcing portion 8, the effect of intervening and joining the diagonally extending reinforcing portion 8 on the side member 3 and the butt joint portion between the side member 3 and the cross member 6 (end portion 61) can be further enhanced. The rigidity of this bonding site can be further significantly improved by increasing the stiffness of the bonding site. However, the press bead 81 and the erected flange 82 formed on the diagonally extending reinforcing portion 8 are formed as appropriate as necessary, and the configuration is such that the press bead 81 and the erected flange 82 are not formed. The press bead 81 and the standing flange 8 can also sufficiently obtain the above-mentioned effects.
2 may be omitted.

Furthermore, the side member 3 and the cross member 6
The reinforcing part 7 is formed on the side member 3 at this joint part in order to strengthen the butt joint part with the end part 61 and improve the rigidity. The cross member 6 (the end portion 42 of the one side member 4) is interposed diagonally in the substantially rectangular closed cross section of the side member 3 and is joined to each of the joining flanges 11 and 21 so as to connect the diagonal portions 3a. ), there is no need to interpose and join a separate reinforcing member (bulk head, etc.), so the number of parts can be reduced. This makes it possible to reduce costs. Furthermore, in order to form a reinforcing part 7 in the side member 3 at the butt joint part, a diagonally extending reinforcing part 8 integrally formed with the cross member 6 (end part 42 of one side member 4) is attached to the side member 3. 3 (each joining flange 11, 21), when forming the side member 3, the cross member is connected between each diagonal joining flange 11, 21 at each diagonal portion 3a of this side member 3. 6
By sandwiching and overlapping the diagonally extending reinforcing portions 8 (both ends 8a) of (the end portion 42 of the one side member 4) (so-called three-layer stacking), the respective joining flanges 11, 21 of the side member 3 are joined. Sometimes, they can be joined by spot welding at the same time, so that the diagonally extending reinforcing portion 8 of the cross member 6 (the end portion 42 of the one side member 4) is connected to the side member 3 (each joining flange 1).
1, 21), there is no need for new joining work, and there is no increase in the number of welded joints, making it possible to significantly reduce the joining work process and joining work man-hours by spot welding. be. Therefore, as described above, by integrally forming the diagonally extending reinforcing portion 8 on the end portion 42 of the one side member 4 of the cross member 6, the number of parts can be reduced, and in order to form the reinforcing portion 7, the diagonally extending reinforcing portion 8 is integrally formed. Coupled with the reduction in the number of processing steps (processing steps) for the portion 8, each cost can be significantly reduced, so the reinforcing portion 7 is formed at the joint portion between the side member 3 and the cross member 6 (end portion 61). As a result, it is possible to significantly improve the joining workability and so-called productivity.

In the above embodiment, the side members 3 and cross members 6 (end portions 61) that constitute the frame members of the vehicle body are
Although the explanation has been given using an example of a connection structure with a connecting part, the structure is not limited to this part (member), but can also be a joint part of multiple members, and a structure in which a reinforcing part is formed to improve the rigidity of this joint part. It can be applied to any part (member).

[Effect of idea]

As mentioned above, this invention is based on forming diagonal joining flanges of the one side member and the other side member forming one member at the joining site of multiple members, and the end of the one side member forming the other member. A diagonally extending reinforcing portion is formed to connect the diagonal portions of the one member on which the diagonal joint flanges are formed, and the diagonally extending reinforcing portion is formed on the one member. By inserting and intervening diagonally so as to connect the diagonal parts of the one member and overlapping and joining each diagonal joining flange at the diagonal part of the one member, the diagonally extending reinforcement part of the other member , a reinforcing portion is formed on one member at this joining region in order to reinforce the joining region between the other member and the one member and improve the rigidity, without using a reinforcing member of another member. The number of parts and processing man-hours for forming the reinforcing portion can be reduced, and the diagonally extending reinforcing portion, which is the reinforcing portion, can be simultaneously joined to each joining flange of the side member when forming the side member, Since the joining work process and the number of joining work steps can be reduced, each cost can be significantly reduced, and the joining work efficiency can be greatly improved by forming a reinforcement section at the joining site between one member and the other member. The so-called productivity can be greatly improved, and the reinforcing part can be formed in the one member by intervening and joining the diagonally extending reinforcing part of the other member, Since the joint part between one member and the other member can be sufficiently reinforced, it is possible to reliably prevent cross-sectional deformation (cross-sectional collapse) of this joint part (particularly the one member), and the rigidity of the joint part can be increased. can be significantly improved.

[Brief explanation of the drawing]

The drawings in Figures 1 and 2 show an embodiment of this invention, with Figure 1 being an exploded perspective view showing the state of one member and the other member before they are joined, and Figure 2 being the state after they are joined. Fig. 1--line sectional view showing the conventional example, and drawings from Fig. 3 to Fig. 5 show the conventional example.
The figures are a perspective view equivalent to figure 1 and figure 4 showing the state after connection.
This figure is a sectional view corresponding to FIG. 2, and FIG. 5 is a third perspective view of the other side member to which the bulkhead of one member is joined. 1... One side material, 2... Other side material, 11, 21...
Joint flange, 3... Side member (one member), 3a... Diagonal part, 4... One side member, 42...
End, 5... Other side member, 6... Cross member (other member), 61... End, 7... Reinforcement part, 8...
Diagonal extension reinforcement section.

Claims (1)

[Scope of utility model registration request] The ends of the other member, which form a substantially rectangular closed cross section with the one side material and the other side material, are arranged substantially perpendicular to the longitudinal direction of the one member that forms a substantially rectangular closed cross section with the one side material and the other side material. In a member joining structure in which the one member of the one member of the butt joining part is butted and joined, and a reinforcing portion is formed, each joining flange of one side member and the other side member of the one member is formed in a diagonal shape. and a diagonally extending reinforcement formed at an end of one side member of the other member to connect the diagonal portions of the one member with diagonal joint flanges formed thereon. The diagonally extending reinforcing portion formed on one side member of the other member is inserted diagonally into the one member, and overlapped with each diagonal joining flange of the one member. A member joining structure characterized in that the member joining structure is configured such that the diagonally extending reinforcing portion of the other member is joined to form a reinforcing portion in the one member.